<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>

<body>
    <div id="root">
        <h2>人员列表</h2>
        <button @click="updateMei">更新马冬梅的信息</button>
        <ul>
            <li v-for="(item,index) in persons" :key="item.id">
                {{index}}:{{item.name}}-{{item.age}}-{{item.gender}}
            </li>
        </ul>


    </div>

    <script>
        Vue.config.productionTip = false;

        //用computed实现
        const vm = new Vue({
            el: "#root",
            data() {
                return {
                    persons: [
                        {
                            id: "001",
                            name: "马冬梅",
                            age: 29,
                            gender: "女",
                        },
                        {
                            id: "002",
                            name: "周冬雨",
                            age: 27,
                            gender: "女",
                        },
                        {
                            id: "003",
                            name: "周杰伦",
                            age: 25,
                            gender: "男",
                        },
                        {
                            id: "004",
                            name: "麦哲伦",
                            age: 43,
                            gender: "男",
                        },
                    ],

                }
            },
            methods: {
                updateMei() {
                    // this.persons[0].name = "马老师";
                    // this.persons[0].age = 50;
                    // this.persons[0].gender = "男";
                    this.persons[0] = { id: "001", name: "马老师", age: 50, gender: "男" }//发现vue并没有检测到
                }
            },

        })
    </script>

</body>

</html>